Hey GGraindo,
If you open the NI-DMM Soft Front Panel, are any other error codes given?
Can you rename your device "Dev1" and see if the error persists?
When was the module last calibrated? Calibration dates are in MAX under the DMM's Calibration tab.
What is the module part number? It should start with either 191485 or 189380.
-John S
National Instruments
Analog Engineer